Pump for injecting an odorous material into a natural gas line



FIG. 1 is a top plan view of a pump for injecting an odorous material into a natural gas line showing our new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is an elevational view taken from one side thereof;

FIG. 4 is an elevational view taken from the side opposite that shown in FIG. 3;

FIG. 5 is a left end elevational view thereof; and,

FIG. 6 is a right end elevational view thereof. 

The ornamental design for a pump for injecting an odorous material into a natural gas line, as shown. 